Accessible email signup form

<form action="/subscribe" method="post">
  <div>
    <label for="email">Work email</label>
    <input id="email" name="email" type="email"
           autocomplete="email" required
           aria-describedby="email-help">
    <p id="email-help">We will only send product updates.</p>
  </div>
  <button type="submit">Subscribe</button>
</form>